EP 0473384 B1 19970709 - Coding apparatus for digital image signals
Title (en)
Coding apparatus for digital image signals
Title (de)
Kodierungsgerät für digitale Bildsignale
Title (fr)
Dispositif de codage de signaux d'image digitaux
Publication
Application
Priority
JP 23153590 A 19900831
Abstract (en)
[origin: EP0473384A2] A coding apparatus for a digital image signal includes a circuit (5) to which a digital image signal which has been converted into a signal having a two-dimensional block structure is supplied, and which is such that between first and second blocks which are located at spatially the same position and respectively belong to two sequential frames, the first block is always transmitted and transmission/non-transmission of the second block is adaptively executed. A control circuit (5) controls the transmission/non-transmission of the second block in accordance with an absolute value of a difference between values of pixel data at the same position in the first and second blocks, and a coding circuit (18) to which the pixel data of a second block which is to be transmitted are supplied compression encodes the pixel data on a block unit basis. <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
G06T 1/00 (2006.01); G06T 9/00 (2006.01); H03M 7/30 (2006.01); H04N 5/91 (2006.01); H04N 5/92 (2006.01); H04N 7/26 (2006.01); H04N 7/32 (2006.01); H04N 7/46 (2006.01); H04N 9/804 (2006.01); H04N 9/808 (2006.01); H04N 11/04 (2006.01); H04N 19/00 (2014.01); H04N 19/126 (2014.01); H04N 19/132 (2014.01); H04N 19/134 (2014.01); H04N 19/136 (2014.01); H04N 19/137 (2014.01); H04N 19/142 (2014.01); H04N 19/176 (2014.01); H04N 19/196 (2014.01); H04N 19/423 (2014.01); H04N 19/426 (2014.01); H04N 19/46 (2014.01); H04N 19/587 (2014.01); H04N 19/59 (2014.01); H04N 19/625 (2014.01); H04N 19/65 (2014.01); H04N 19/70 (2014.01); H04N 19/87 (2014.01); H04N 19/98 (2014.01)
CPC (source: EP US)
H04N 19/132 (2014.11 - EP US); H04N 19/152 (2014.11 - EP US); H04N 19/587 (2014.11 - EP US); H04N 19/96 (2014.11 - EP US); H04N 19/98 (2014.11 - EP US); H04N 19/50 (2014.11 - EP US)
Citation (examination)
EP 0267581 A2 19880518 - KOKUSAI DENSHIN DENWA CO LTD [JP], et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
US 5241381 A 19930831; DE 69126750 D1 19970814; DE 69126750 T2 19971023; EP 0473384 A2 19920304; EP 0473384 A3 19930303; EP 0473384 B1 19970709; JP 2969867 B2 19991102; JP H04115686 A 19920416; KR 0185583 B1 19990415
DOCDB simple family (application)
US 74585591 A 19910816; DE 69126750 T 19910823; EP 91307804 A 19910823; JP 23153590 A 19900831; KR 910014923 A 19910828